JPS5555435A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5555435A
JPS5555435A JP12815278A JP12815278A JPS5555435A JP S5555435 A JPS5555435 A JP S5555435A JP 12815278 A JP12815278 A JP 12815278A JP 12815278 A JP12815278 A JP 12815278A JP S5555435 A JPS5555435 A JP S5555435A
Authority
JP
Japan
Prior art keywords
support material
acid copolymer
magnetic layer
unsaturated acid
substance layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12815278A
Other languages
Japanese (ja)
Inventor
Hiroshi Zaitsu
Takezo Shimizu
Hikari Ishida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maxell Ltd
Original Assignee
Hitachi Maxell Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP12815278A priority Critical patent/JPS5555435A/en
Publication of JPS5555435A publication Critical patent/JPS5555435A/en
Pending legal-status Critical Current

Links

Landscapes

  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To enhance adhesion between a support material and a magnetic layer to reduce charging of the magnetic layer by providing a conductive substance layer, which includes an unsaturated acid copolymer having COOH radical, an isocyanate compound and a specific carbon black, on the polyester support material.
CONSTITUTION: On a polyethylene terephthalate film, a conductive substance layer which includes the carbon black of a surface area over 700m2/g, an oil absorption quantity over 300ml(DBP)/100g and a particle diameter below 30mμ and consists of an unsaturated acid copolymer having COOH radical and an isocyanate compound is provided. As an example, a mixture of an unsaturated acid copolymer of 63W85wt% such as acrylic acid and acrylonitrile-acrylic butyl and a polyurethane of 7W10wt% including two or more free isocyanate radicals in molecules is used as a substance layer binder resin. By using both resins, an adhesion property is improved, and exfoliation between the support material and the magnetic layer is prevented.
COPYRIGHT: (C)1980,JPO&Japio
JP12815278A 1978-10-17 1978-10-17 Magnetic recording medium Pending JPS5555435A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12815278A JPS5555435A (en) 1978-10-17 1978-10-17 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12815278A JPS5555435A (en) 1978-10-17 1978-10-17 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5555435A true JPS5555435A (en) 1980-04-23

Family

ID=14977660

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12815278A Pending JPS5555435A (en) 1978-10-17 1978-10-17 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5555435A (en)

Similar Documents

Publication Publication Date Title
JPS54107935A (en) Hot-melt adhesive
JPS55102668A (en) Method of adhering
JPS567233A (en) Magnetic recording medium
JPS5555431A (en) Magnetic recording medium
JPS5771556A (en) Magnetic tape having leader tape
JPS5555432A (en) Magnetic recording medium
JPS5553592A (en) Recording material
JPS5555436A (en) Magnetic recording medium
JPS5651027A (en) Magnetic recording medium
JPS5315802A (en) High density magnetic recording material
JPS54110496A (en) Material for electric wave absorptive body
JPS5722021A (en) Biaxially-elongated polyester film useful as dielectric of capacitor
JPS5555434A (en) Magnetic recording medium
JPS5555433A (en) Magnetic recording medium
JPS5764328A (en) Magnetic recording medium
JPS5671822A (en) Magnetic recording medium
JPS5613522A (en) Magnetic recording medium
JPS5474403A (en) Coating composite for magnetic disc
JPS5315803A (en) Magnetic recording material
JPS5533115A (en) Carrier material for electrostatic image developer
JPS5584039A (en) Magnetic recording medium
JPS54130936A (en) Zerographic photosensitive element
JPS55120685A (en) Light-scattering adhesive tape or sheet
JPS5567750A (en) Electrostatic recording medium
JPS551637A (en) Magnetic recording medium